Car-buffing device.



T. L. MOK'EEN, CAR BUFFING DEVCE. APBLIGATION FILED NOV. 29. 1909.

ItatentedA Nov.. 5, 19112.

2 SHEETS-SHEET 1.

T; L. MUKEEN. GAB BUPPING DEVICE. APP-LIUATION FILED HOV. 29, 1909'.

Patented Nov.5, 1912.

.2 BEBB'TB-SHBET 2.

`acitizen of thel United States, residing` at t vices, lof ywhich the following is a specifica- .tion.`

draft sills to which the draft gear vC is at,-

1 used -in connectionl with this batting device.V A drawbar -D or coupler of; any. usual or' WSA-335A y To'all whom 'it may concern: A i

cessive' strain off'the draft rigging and sills vmum number of'parts but will nevertheless `taffavel `o'f the drawbar; and also to lso ar-i 's'embled or taken apart while the buffer is` y mounted' on the car.

Figl 4 is a' central longitudinal sectional ele.

`modified construction.

' monly `used but any form of car construc-` n earns l ffIlFFIC.

a rr i Be it'knno'wn `that I, THOMAS L. MCKnnN,

Easton, in the` county of Northampton and AState `of Pennsylvania, have invented a new andzuseful Improvement in Car-Bufng De- This invention relates more particularly to: improvements in friction buiiing devices intended for application to the end sills of freight cars for supplementing the buiing action of the draft gears. j

"One object of this invention is to simplify and improve the construction of -friction buifmg devices which 'are adapted to be se-4 cured on the end sills of cars in place of the ordinary solid striking plate to take the exandft cushion the blows which, when received on 'the solid striking plate,- often `prove injurious to lthe cars.

@ther objects ofthe invention are to construct this device so that it will be compact andinexpensive and will consist of the minioffer a great resistance' and allow a longi range theparts' that they maybe easily as- -In the accompanying drawings, consisting of' two'sheets: Figure' 1 is a fragmentary longitudinal sectional'elevation of a freight ear provided-with a buing device embodying this. invention. Fig. 2 is a plan view thereof, 'partly in section, on line 2-2, Fig.v l. Fig. Sis an elevation, partly in section, in--line 3#3, Fig. 2', of the buiiing device.

vation thereof. v Fig. 5 is a fragmentary sectional 'elevation of a buiiing device of slightly Like reference characters refer to like parts in the several figures.

Referring rst to Figs. 1 andv 2, A representsan end sillof a freight car and B the tached. Theframework `of the car shown in the drawings is of a type that is comtionand any type of draft gear may be CABPBUFFING Dnvrcn.

Specification of Letters Patenti.: Y Patented Nov. 5, 1912. Application ala Ntyember ysae; 1909. serial Nb'. 536,444.

suitable construction may be employed which has a rearwardly facing projection or shoulder d above the drawbar for engaging and operating the movable head of the buffing device. This projection is preferably formedv by the rear end of vthe drawhead. The inner end of the drawbar, as usual, is connected to the draft gear. The friction puffing mechanism embodying this invention 1s contained within a hollow striking plate, box or casing E which is similar in-its'general shape and dimensions to the ordinary solid striking plate 'and is secured in a similar manner to the car end sill. The striking plate E, as shown, is preferably made in one plece, having a vertical web, wall, or plate e which is connected to the end sill of the car by rivets e or in any suitable manner. Two brackets F F depend below the end sill from each side of the striking plate and are connected to the center or draft sills of the car in any suitable manner, angle plates f being shown for this purpose in this particular case, which are riveted to the draft sills and the brackets F. The drawbar is confined laterally and guided in its longitudinal movement by these two brackets, and is supported by a bar f which joins the lower ends of the brackets. y

The striking plate has .a middle, hollow portion or buffer chamber G in which are contained the friction devices and which has an opening g in its outer Wall through which a buffer block or wedge H projects beyond the buffer chamber. This wedgeblock is adapted to move longitudinally of the car in the bottom of the buffer chamber G and is so located that the shoulder d of the coupler will engage with the outer face of the wedge during the inward movement ofthe coupler and force it inwardlyn The buffer block or wedge I-I has an upper inclined Vface which bears againsta correspondingly inclined face on a frlction block I arranged in the buffer chamber above the wedge, so that during the inward movement ofthe wedge H, the friction block I is moved vertically upward in the buffer chamber. A spring K, ar-

ranged between the upper face of the friction block I and the upper wall of the buffer chamber Gr, presses the friction block against wardly. The spring K preferably consists of two sets ofbowed spring plates or leaves arranged with their concave faces toward .each other and their opposite convexfaces bearingrespectively against thc upper face of the friction blockand'the top wall ofthe buffer chamber G. By using leaf springs in-v stead of c'oilsprings, a unich greater resistance capacity is obtained for the same amount of space, and by' arranging the spring leaves in vtwo sets, with their concave faces adjacent, .sufficient movement` of the.' friction Ablock is permitted to make the 1nclination of the faces ofthe friction vand wedge blocks great enough to enable a long travel ofthe wedge and to insure the releas- A ing of the wedge, thereby obviating the necessity. for thecoil release spring, which is ordinarily used. A shim :v is placed between the oppositel sets of the spring' plates wh ich may'be of any required thickness to give the leaf springs the proper tension.

Suitable means are employed for limiting 'the outward movement of. the buffer block; 25-

or wedge by the springs to prevent its escape through the opening g in the outer' wall of the buii'er chamber. In the `construction shown in Figs. .lf-4, this is accomplished, by forming thewedgewith an integral vprojection 'Lfwhich extends downwardlyfrom the v inner end of the l,weitere through a slot Z in the .bottom of the buffer chamber, in which .the projection is adapted to slide during the movements of the wedge. i

In the. modified construction' shown in Fig. 5, a bolt L is used to limit the outward movement of the wedge block linstead ofthe .integral projection L. The head anda ortion of the shank'of'the bolt are locatedwearing the bottom of the buffer chamber.

This plate 4can be readily replaced at small expense when worn out. When this plate is used in connection-.with a wedge having a f depending projection, a slot correspondmg to the slot in the bottomof the buffer chamberis provided in the wear plate..

sents a plate which passes throughv a slot in' the top wall of the buiierchamber G be' tween t-hel edges of the leaf Springs andthe outer wall of the chamber.` When-in plaf'ne." this plate covers the hole n in the outer wall ofthebuiiing chamber, vthrough which the shJm. .andfleaf.Sp1`i 1lgS mey be placed into or removed from the' buffer chamber, and it also serves to take the wear oif `of the outer Wall. Holes n are shovvnin; the plate into which'v an implement can be inserted for vprying the plate -upwardly.-v

4 The buialg device of eitherednseuaionshown is assembled in the following manner: The friction block Iv is first inserted through the opening g in the outer wall of the buii'er chamber and is raised to` permit the buii'er block to be placed under itin position in the chamber. The springs and the shim are then placed into thev butn'g chamber through the openino` n in its outer wall, after which the plate l'is lowered to cover the opening.l If a spring leaf breaks, it is only necessary to raise the plate and replace the broken spring by la new one.

The Vbufling device described consistsv of the minimum number of parts and occupies very little space. By arranging the leaf' springs as shown, horizontally and with their length crosswise 4of the 'car `between the t-'op 'wallof the buffer chamber and the vertically movable frictionv block. the distance that the bufing device extends beyond the end of the car is no greater than that of the Vordinary striking` plate and much less than it ,would be in a construction in which'the `friction block is arranged to move horizontally.longitudinally of the car, while the width of the buffer chamber is much less than it would be if the springs were arranged .on opposite sides of the wedge. Hence it is possible, with the construction described, to produce a bufling'device which requires no more space, either' lengthwise or v crosswise of .the car` than the ordinarv solid strikingplate. and furthermore. the bufing device is of no greater height than the ord'inarv striking plate. 4-

I claim as my, invention:

' 1. In a buiiing device for cars. the com-` bination of a striking nlate'adapted to be secured to the end sillof a car and having a buffer4 chamber. al wedge. adapted to be moved inwardly in'said 'chamber by the draw-bar, a friction block in said' chamber ada'ot'ed 'to' be moved vertically b v said wedge.. a leaf [spring horizontally arranged? in said chamber above said vfriction block for opposing. the movement of said friction v block, and means for retainimq said wedge in place in the chainbnfsubstantiallyas set 2. In l a buiiing device for cars, the. corn- '.'binationof `a striking plate adapted to be secured to the-end sill of a car and having "a, buffer chamber, a wedge adapted to be moved inwardly 1in said chamber bythe '-drawbar, a friction block in said chamber adapted. to be moved vertically 'by said "Wedge, a` spring in said chamber above said friction block for opposing' the movement of said friction block, and .means connected to said Wedge for retaining the wedge in 'place in the chamber, substantially as set iortli.V o

3.` 'ln a bung device for cars, the'coinbi nation of a casing adapted to be secured to e carend havingV a buffer chamber with a lower portion'w'hich is contracted'in Width and awvider upper ortion, a wedge located in said. lower portion and adapted to be moved inwardly in said chamber, a friction block fn said chamber adapted to be moved vertically by saidv Wedge, and a bowed .leaf

arranged lengthwise in the Wide up.

per portion of said chamber 'for opposing 5 tbe movement of said Wedge, substantially as Set forth.

Il. l: a "Drilling device for cars, the combin nat-ion of a casing adapted to be secured to a car and having a bu'er chamber, a Wedge adapted to be moved inwardly in said chamber by the drawbar, a irri-,tion block in said chamber adapted to be moved vertically by said w:;dge,a leaf Spring,l arranged said chamber above the friction block with its length crosswise of the direction of the movement of the wedge for opposing the vwith brackets for a drawbar and With a butler movement ef said friction block, and a re Amovable a which covers an -opening in the outer Wall of the buler chamber opposite to the spring', substantially as set forth.

5. ln a buiiinfr device for cars7 the combination of a striking plate adapted to be secured to the end sill of a car andprovided depending guide and supporting Witness my hand, this 19th day of NO- vcmber, 1909.

.THOMAS L. MCKEEN.

Witnesses:

C; W. PARKER, C. B. HoRNBEov 

